Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J03043856+4213494

PSN J03043856+4213494   2013 08 31.8925*  03 04 38.56 +42 13 49.4  18.1 U    3E   2N  P2194789  R 9


2013 08 31.8925

POSSIBLE SUPERNOVA IN PGC 2194789 Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 18.1) on a 40-s survey image (limiting mag about 19.0) taken by Xing Gao in Xingming Observation Sky Survey(C42) around Aug.31.89247 UT.using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). Confirm images taken on Sep.1.86779 UT (limiting mag 19.0) and Sep.2.83711 UT(limiting mag 19.0). The new object approximately located at R.A.=03h 04m 38s.56 Decl.=+42°13'49".4(equinox 2000.0). Which is about 2.9" east and 2.4" north of the center of the PGC 2194789. Nothing is visible at this position on archival images taken on Aug.19(limiting mag 18.5),Aug.10(limiting mag 18.5) or on the DSS from Sep.30,1998(limiting mag about 19.7). NET USNO-A2.0 XM59ZX C2013 08 31.89247 03 04 38.56 +42 13 49.4 18.1 V C42 XM59ZX C2013 09 01.86779 03 04 38.60 +42 13 49.5 17.9 V C42 XM59ZX C2013 09 02.83711 03 04 38.55 +42 13 49.2 17.9 V C42 All images can be seen from: http://www.xjltp.com/XOSS/XM59ZX/XM59ZX.htm C42,Xingming Observatory,Mt. Nanshan. Observers Z.Xu,X.Gao,Measurers Z.Xu 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.



2013 09 04.993

This transient was observed on 2013 09 04.993 by Gianluca Masi and Francesca Nocentin, remotely using the 17" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. Unfiltered images show a source at mag. 18.1 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 38.47s; 49.6" (J2000.0, mean residuals of 0.15" on both axes).



2013 09 05.365

This possible supernova in PGC 2194789 was detected with 3 x 15 min images using a luminance filter Photometry: Mag 18.24 +/- 0.06 L (V for ref) Astrometry: RA 03 04 38.58 Dec +42 13 49.2 These data were collected by Joseph Brimacombe, Cairns, Australia . Link to image and further information: http://www.flickr.com/photos/43846774@N02/9736371276/


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